Field-Sequential Display Panel With Integrated Switching Units
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display panels face a challenge in achieving full-screen display due to the large volume of switching transistors required to share a source driving signal between image capturing and conventional display areas, which affects the display effect by occupying a significant portion of the display area.
Innovation Solution
A display panel design where first and second pixel units in the same column share the same source driving signal output terminals, with switching units connected between second sub-pixel driving circuits and source driving signal output terminals, allowing for time division control to achieve field sequential display without a division area, thereby avoiding the need for large switching transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switching transistors are used to share source driving signal between image capturing and conventional display areas, then field sequential display can be achieved, but the display area occupied by switching transistors increases significantly
Solution Approach 1:
The patent extracts the switching function from a separate division area and integrates it directly into the second display area by placing switching units within the second sub-pixel units. This eliminates the need for a dedicated division area and reduces the overall display area occupied by switching components while maintaining field sequential display capability.
Solution Approach 2:
The patent transitions from a spatial separation approach (division area between image capturing and conventional display areas) to a temporal control approach (switching units controlled by control signals to multiplex source driving signals). This dimensional shift from space to time allows for more efficient use of display area.
2Ease of operation
If separate source driving circuits are set for image capturing area and conventional display area, then independent display control is achieved, but device complexity increases
Solution Approach 1:
The patent implements a universal source driving circuit that can serve both the image capturing area and the conventional display area through time-division multiplexing. The single source driving circuit outputs source driving signals that are sequentially applied to different display areas via switching units, achieving independent control without requiring separate driving circuits for each area.
Solution Approach 2:
The patent merges the control functions by combining the source driving signals for both display areas into a single source driving circuit. The switching units act as multiplexers that combine and route the same source driving signal to different destinations (image capturing area or conventional display area) based on temporal control, thereby reducing the number of separate driving circuits needed.
Data Source
AI summary
A display panel includes: a first display area, including a plurality of first pixel units, wherein each of the first pixel units is provided with a first pixel driving circuit; a second display area, comprising a plurality of second pixel units, wherein the second pixel unit comprises a plurality of second sub-pixel units, and each of the second sub-pixel units is provided with a second sub-pixel driving circuit; and a plurality of switching units located within the second sub-pixels, wherein the switching units are connected between the second sub-pixel driving circuit and the corresponding source driving signal output terminal, and are configured to transmit, under control of a control signal, a data signal of the source driving signal output terminal to the second sub-pixel driving circuit.